The State of the Nearshore Bottom as an Index of the Shore State, South Baltic Coast Examples

Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)


The aim of this work is to present the results of seabed surveys in the deeper nearshore zone, which indicate an intense transport of sandy bedload into the sea. This translates into a negative bottom sediment balance and erosive character of the shore incongruent with the intense protective actions including a lot of beach nourishment. The phenomenon of irrevocable transport of sandy bedload into the sea has not been sufficiently accounted for in the studies on the shore protection so far. This might be due to the fact that an assessment of bedload transport requires adequate knowledge of the character and state of the bottom in the deeper nearshore zone. Other basic requirements include multibeam echosounder, side-scan sonar measurements and seismic profiling supplemented with other methods such as collection of grab and core samples, underwater TV, etc.). The paper provides examples of the assessment of nearshore bottom state conducted in the vicinity of Ustka (where the dune shore is typical of the Polish coast) and near Kołobrzeg (where rocky outcrops occur on the nearshore bottom and which is a unique coastal form in this area). The state of the nearshore bottom in the deeper nearshore zone may constitute a relative state index in the assessment of the long-term state of the whole coastal zone, while the nearshore bottom of the shallower nearshore zone (including the sandbars zone) serves as a temporary state index. These results are important in the assessment of all the shores formed by wave activity.


Bedload transport out to sea Beach nourishment Non-invasive seabed surveys DTM Baltic Sea Poland 



The authors wish to thank all the reviewers for their constructive remarks, which helped us express our ideas more precisely and improve the article’s quality.


  1. 1.
    Gruszczyński, M., Rudowski, S., Semil, J., Słomiński, J., Zrobek, J.: Rip currents as a geological tool. Sedimentology 40(2), 217–236 (1993)CrossRefGoogle Scholar
  2. 2.
    Nowak, J., Rudowski, S., Wróblewski, R., Sitkiewicz, P., Lisimenka, A., Gajewski, Ł.: Application of a multibeam echosounder for the digital imaging of the bottom relief of seabeds and rivers. Bull. Marit. Inst. Gdańsk 30(1), 86–89 (2015)Google Scholar
  3. 3.
    Rudowski, S., Gajewski, J., Hac, B., Makurat, K., Nowak, J., Szefler, K.: The role of an adequate determination of the state of nearshore bottom bed load as a scaling factor controlling the state and the changes of the shore in the Kołobrzeg region. In: Proceedings of the 11th International Coastal Symposium, Journal of Coastal Research, Special Issue 64, pp. 816–819 (2011)Google Scholar
  4. 4.
    Rudowski, S., Sitkiewicz, P., Wróblewski, P., Makurat, K.: Solid rocks on the nearshore seabed—the distribution and potential impact on coastal processes in the Kołobrzeg region, the Southern Baltic. Oceanol. Hydrobiol. Stud. 46(1), 62–73 (2017)CrossRefGoogle Scholar
  5. 5.
    Szefler, K., Gajewski, Ł., Hac, B., Rudowski, S., Wróblewski, R.: The Technology of the seabottom surveys for the monitoring of the coastal area. In: Sana, A., Hewawasam, L., Waris, M.B. (eds.) Proceedings of the Fifth International Conference on Estuaries and Coasts (ICEC 2015), Conference 2015, pp. 175–178 (2015)Google Scholar
  6. 6.
    Uścinowicz, S.: The Baltic Sea continental shelf. In: Chiocci, F., Chivas, A. (eds.) Continental Shelves of the World: Their Evolution During the Last Glacio-Eustatic Cycle, pp. 1–35. The Geological Society of London (2014)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Maritime Institute in GdańskGdańskPoland

Personalised recommendations